Lock



W4. R. MICHAEL.

LOCK. APPLICATN FILED MAR. 22, |922. '2909., y Patentedept. i9, 1922.

2 SHEETS-SHEET l.

if [Lil fummb W. R. MICHAEL.

LOCK.

'APPLICATION FILED MAR. 22, 1922.

' Patentedsept. 19, 1922 2 SHEETS-SHEET 2.

Maul!!! Patentes sept ia, i922. i lgd@ r s le isc.

' WILLIS It. MICHAEL, or YORK, PENNSYLVANIA.

i Loom. V` i applicati@ mea March 22, Issa serial No. 545,709.

To all whom t may conce/m: portionnof the casing, a portion of the bolt'Be it known that VILLIs R. vMIoHALL,a the right-hand trunnion-stop andthe taloIi citizen of the United States, residing at on thetrunnion,-the section being taken on York, in the county of York andState ofH-theline 7 7 of Fig. 3, looking in the di- 55 Pennsylvania,hasinvented certain new andl rection of the darts.

useful Improvements in Locks, of which the Fig. v8. shows the detachedbolt in perfollowing is a specification. Y SpeCtlV'.

This invention relates to improvements in igs. 9 andl 10 illustrateperspective deinterchangeable key locks and has particutails of the twodetached right and left- 60 l0 lar reference to that class of lockswhich are hand stops respectively, and

usually employed in connection with safe- Figs 11-"12-13-14-15 andlshowthe deposit boxes wherein one key is retained several detached tumblersin side view.

by the depositor while a guard key is' re- Referring to the drawings thenumeral tained by an attendant so that both keys 20', designatesone endwall; 2l another end 65 15 will be required to operate the lock. Wall;22 a side wall and 23 the other side The present invention is directedto a con- Wall of the lock-casing. All of these walls struction of lockwhichjmay readily be used are formed integrally with a rear or backaseither a right or-a left-hand lock,-there Wall 24. Y a frequentlybeinginstances in the arrange- The .end Lwall 20, has a slot 25,therek70 ment of boxes in a vault that makes it dethrough so that abolt-plate 26, when seated sirable to have some doors swung from oneagainst therearor back-wall 24, may have side while others are swung`from the oppoits bolt proper 27' in register with said slot. site Side,The rear or back-wall 24 is provided with By means of my invention thesame lock a perforation 28, as shown in- Fig. 5, for a 75 25 may be usedon either a right or a left-hand purpose to 'be`explained..

door and the direction of rotating the keys The bolt-plate 26, asclearly shown in Fig. correspondingly changed. 8, lhas a slot therein ofa peculiar and novel The invention further consists in the novel form.This slot has two oppositely disposed construction, combination andarrangement Oil-Sets 29 and 30 respectively, the forward 80 30 of partshereinafter set forthand particuedgesof which two off-sets are connectedlarly pointed out in appended claims. by a Continuously curved frontwall 3l. At

The invention is illustrated in the accornthe rear,` the slot has a;narrow rearward expanying drawings, whereimy tension-slot 32. Betweenthe curved front Fig. l. shows the detached lock in per- Wall 31 of theslot land the rear edge of the 35 35 spective. bolt-proper. 27, thebolt-plate is provided Fig. 2. illustratesv the lock in front elevawitha flat-faced stud 33 which latter is lo-V tion, the front cover beingremoved. cated on a central longitudinal line which Fig. 3. shows ytheinterior of the lockwith is midway between the two off-sets 29 all thetumblers removed but with the bolt and 80. y .Y 40 in place and alsoshows the right-hand. trun- The rearward extension-slot 32 in theboltnion or poststop in place in the bolt.V 'Y plate' also has alongitudinally central po- Fig. 4. illustrates the same but with thesition inthe said rplate so that the stud 33 left-hand trunnion o rpost-stop in place in and theY slot-extension 32 are both in alinethebolt. 4 ment, as can be seen in Figs. 3 and4 of the 95 Fig. 5. shows avertical longitudinal sec,- drawings.

tion through the lock with all the partsy in The back-wall 24 of thecasing is provided place. l K v wit-h a rigid` post 34, which extendsthrough Fig. 6. illustrates the detached trunnion the Slot-extension 32in the bolt-plate and or post in perspective and on' a much enforms-alguide for that plate as. the latter is 100 larged scale. reciprocated toretract or project the bolt. Fig. 7. shows a sectional detail through aIt is important to note that the axis of i thispost 34 must line up withthe stud 33,

the perforation 28 and the center of the slot 32 for reasons that willpresently be pointed out.

yAn important feature of my invention lies in the fact that mylock-structure isftso designedE that it may be Autilizedas either' avright or left-hand lock but when set for lefthand operation it cannotbefy actuated as; a parts are changedv right-hand lock until thev in thecasing. f

In carrying out this feature of my invention I provide what I termtrunnion stops eithe'rvofwhich may be utilizedin the lockcasi'ng atatime, butnwhen'oneis used the.I

other will' be' omitted. 1 U Y These trunn'ion-st'ops are designated 35and 36 respectively and areof like construction with the .exceptionthatthey are formedA in what may be termed as rights and left's'.

The stop 35 is shaped so as to accurately iit intol the o-fset 29of'the-boltplate andhas a fl`ange37, which engages the flat face of the'the'bolt-plate and retain it in place as clearly shown in Fig. 7 of thedrawing.

`It .is to beun'derstood that when the vstop4 35is in place in theoff-'set 29 it will' have the l effect of blanking or closing ofi' thatside'of the bolt-plate-slot just the same asv though tlierehad been noofi-set 29I formedat that side".v 'The same' is true ofoff-setQSO whenthe stop 36 is placed therein. y y Y y The'purpose and operationof thesestops and 36 will presentlybe explained. 1 I

In further-carrying out myV invention I employ a key-post 39 having akey-slot 4,0

and provided with aV talon or wing4l. l The` key postl has any innerend- 42, which seats in the perforation 28 in the back-wall 24, as shownin Fig. 5 of the drawing, which perforation forms a bearing for saidpost,- endf.'

Whenthe key-post is in place, .asl clearly r'shown in. either Fig. 3 orFig. 4the talon'kor wing 41 extends laterally and has positiony in thebolt-plate slot. l y l n The normal position of' this talon orv wing,that is, when` the bolt proper 27 is' shot, is

vsuch that its swinging endv will confront' the curved front wall 31 ofthe slot in theabolt.- plate. n

ylt' is thus t'o'be noted that the talon or wing 41,and the center ofthe keylpo'st' are' in linement with the stud 33 on the' boltplate andwit'lithe axis of the post 34.

In the present instance I provide thelock its free edge for the entranceof the stud 33on the bolt-plate as is common in tumlil'ers of' thischaracter:

The tumblers are arranged in a predeterv mined order in thelock-casingwith their slots and perforations 49and 50 receiving. the'vrigidA post 34. Bythis means-the tum blers may be' swun'gvv with thepost as the pivot, and those lhaving ytliejslots 49, may also have aslight longitudinal movement.

Each tumbler has a spring linger 52,` which will press against one or.the other of the walllsll 22er' 23 of the casing, accordingy to thedirection in which thekey-post 39:'k is tobefrota'ted to retract thebolt-plate, and this direction is determined by the insertion ofthestops35 or 36in the off-sets 29 or 30' of the. bolt-plate. If, for'example, the

' stop 36 is placed in the oif-set'30 ofthe bolt,-

pla't'e then the tumblers will be soI located onY the post 34 thatl thesprings 52 will engage wall 23 of the casing and'press the tumblers in adirection' toward that side o f. the lockplate where said lu l36 isinserte'das shown "n Fig. 2"" of'fthe y rawing. yVVhenin thisL positionthe talon or' wing 4l on the lrey'qgostl can only be turned tothe right(as indicated by the dart in Fig. 3)' to effect a retraction of thebolt-plate, because the presence' ofthe ,lug 36 in the off-setwillc'l'ose the bolt-` plate slotand prevent the' rotation of the talonor wing i'n the lefthand direction.`

The reverse will be true when the lug 35 ion is inserted inthe off-set29 of thebol't-pla-te and this latter position oflthe lug 35 `willrequire' the tumblersto bEpmd-:On the post 34 S0 that the Springs' win;Sea against; a@ casingwuu 22. l

By this mere reversal of lugs 35 and. 36.-.. and reversal of the`tumblers, tligellfoclrfmay v be caused' to operate 'by turning thekey-post 39' ineit'lier` a right' or a leftlhand'direction. according towhich of'tlie lugs is employed;

The loclt4V is designed for, actuation by two:

'lreys,-one' of which' vWill actu'ate certain tumblers, such as 44' andwhilethe ot-'lier keyk will' actua-te the' remaining tumblers.

This. however is notA novel and is present" ylg ecause`tlaeg sty-leofflock shown issucli as to call"v for'tlie'use of aplurality'of' keys.'

To retain the tumblers in position andto provide asubstantial bearingfortlie keya tubular barrel 54` projectingl therefrom so' that the outerend of the key-post 39 may enter and have rotating bearing in saidbarrel. 1

This barrel has a longitudinal slot 55, along its inner side which'willregisterwith the slot l() in the key-post only when the post isturned inposition to project lthe boltplate 26. By this means the keys cannot bewithdrawn without projecting the bolt.

I also provide means for ensuring the proper positioning of thecover-plate in that at intervals around the edge I provide thecover-plate with lugs 56, which are arranged to register withcorresponding notches 57 on the walls 21-22 and 23 of the casing.

The cover-plate is retained in place by means of a screw 58 which passestherethrough and enters the rigid post 34, as shown in Fig. 5.

Because of the necessity i'or reversing the tumblers and placing a lugin one or the other of the oil-sets 29 or 30 in thelock plate to obtaina rightor left-hand operation oi the key-post, it is necessary thatlock-lug 33; post 3a and key-post 89 all be y arranged on the samecenter line for the tumblers must be capable of operating from eitherside of the key-post and the slots 51 of the tumblers brought intoalinement with the lufr 33 to enable the lock-plate to be retracted.

ilaving described my invention, I claim,-

1. In a lock the combination with a boltplate having a lug thereon, of arotatable key-post, a series of tumblers pivotally sustained so as toswing at one side of the key-post and across the path of the boltlug,said tumblers being reversible from one side to the opposite side oi thekey-post whereby the lock may be changed from a right to a left-handlock.

2. In a lock the combination with a boltplate having a lug thereon, anda slot therein, of a hey-post sustained to rotate in the slot of thebolt-plate, a rigid post in alinement with the lug and the key-post anda series of tumblers pivotally attached to the rigid post said tumblersbeing reversible so they maybe positioned at one side or the other ofthe key-post whereby the lock may be changed from a right to a left-handlock.

3. In a lock the combination with a reciprocating-bolt-plate having anopening therein with a like conformation at directly opposite sides ofsaid opening, of a rotatable key-post provided with a talon to swing insaid opening between said opposite sides and a plurality of tumblerspivotally mounted so as to cross the path of the bolt-plate saidtumblers being reversible from one side to the other of the key-post andits talon whereby the lock may be changed from a right to a left-handlock.

In a lock the combination with a re- Ieiprocating bolt-plate having anopening therein said opening being provided at each of opposite sideswith -an off-set, of a rotatable key-post provided with a talon to swingin said opening between said opposite oit-sets, means for closingreither of saidcl-sets and a plurality of tumblers movable .romthe openoff-set toward the closed oil-set l.to lock the bolt-plate againstmovement.

5. In a lock the combination with a reciprocating bolt-plate having anopening therein said opening having an off-set at each of its oppositesides and also provided with an elongated slot, a rotatable key-posthaving a talon which swings in said opening between said olli-sets, arigid post eX- tending through the elongated slot of the bolt-plate,means :tor closing either of the off-sets in said bolt-plates to preventmovement of the key-post talon past said closed eff-set and ya pluralityof tumblers pivotally connected to said rigid post and extending aroundthe key-post on that side where the open off-set is located.

6. In a loclr the combination with a casing, of a bolt-plate slidable inthe casing7 a rigid post in the casing, a lug on the boltplate, a seriesof tumblers pivotally connected to the rigid post, a key-post rotatablymounted between the rigid post and the lug on the bolt-plate,-said lug,key-post and rigid post being in alinement whereby the tumblers may bemounted to swing from either of opposite sides of the key-post.

7. In a lock the combination with a boltplate having a lug thereon andan opening therein with an off-set at each of the opposite sides of saidopening, a rotatable key-post having a'talon to swing in said openingbetween said off-sets, a removable lug plate to close one. of saidoff-sets and a series of tumblers movable across the lug on thebolt-plate said tumblers being reversible so they may be made to swingat ether side of the key-post.l

8. In a lock the combination with a casing, of a bolt-plate slidable inthe casing, a rigid post in the casing, a lug on the boltplate, a seriesof tumblers pivotally connected to the rigid post, a key-post rotatablymounted between the rigid post and the lug on the bolt-plate,-said lug,key-post and rigid post being in alinement whereby the tumbler-s may bemounted to swing from either of opposite sides of the key-post, a

cover-plate to close one side of the casing said plate having a tubularbarrel to receive the key-post, and means forcentering the barrel in thecover with the said rigid post, key-post and bolt-plate lug.

9. In a lock the combination with a casing having notches in its walledges, of a bolt-plate slidable in the casing, a rigid post in thecasing, a lug on the bolt-plate, ay series of tumblers pivotallyconnected to the rigid post, a' key-postrotatably mounted betweenAell-luernent whereby the "eumhIeI-sv may, be

mounted to; swing from eitheriof oppote sides:vv of the key-pos:,` a@over platexto" else one side of tll'e'caslgl saidl plate having a 1,42@een in the Wall edges? O the easing whereby to center the barel with therigid postkey# poet :indi loolt-plfzey lug. f l v whereofI affix mysignez`- 12nipeetimony turef.'y y l, .v

l WILLDSR. MIGH'AEL.

Tof

